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PAGE 20 of 60 VX2200 TECHNICAL MANUAL VER1.4

4 WAY VIDEO ISOLATION PCBS (316I & 894I)

The 316I (For balanced video systems) and the 894I (For coax video systems) are designed to piggyback

the 2204N isolation PCB but can also be used standalone. The PCB’s can each feed up to four apartments

with video signal and videophone/monitor power. Each output is isolated to protect against short circuits. A

fault LED (RED) next to each output will illuminate when the 20Vdc supply to an apartment is in short or an

over current situation. The PCB’s can mounted either in a control cabinet in a bus configuration or dispersed

throughout a building as landing units. All connections are plug type for easy maintenance.

Technical specifications

Number of outputs : 4

Working temperature : -10 +50 C°

+20 output current max. : 500mA

316I (Balanced video)

894I (Composite video)

1 2

5 6 5

1 2

1 = Output 1 2 = Output 2

3 = Output 3 4 = Output 4

5 = Main bus input 6 = Main bus output

7 = 20Vdc to apartment, fault on output LED (Red)

316I

Connection

Function

V1 (A,B,C,D)

Balanced video - sync

Balanced video + sync

+20

+20Vdc

894I

Connection

Function

V (1,2,3,4)

Video signal

Coax screen

+20

+20Vdc

+12V

12Vdc from videomonitor to

power 894I

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 59 60

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